EP0757226A3 - Automatic inspection method for contactlessly measuring an offset of a central feature of an object - Google Patents

Automatic inspection method for contactlessly measuring an offset of a central feature of an object Download PDF

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Publication number
EP0757226A3
EP0757226A3 EP96305374A EP96305374A EP0757226A3 EP 0757226 A3 EP0757226 A3 EP 0757226A3 EP 96305374 A EP96305374 A EP 96305374A EP 96305374 A EP96305374 A EP 96305374A EP 0757226 A3 EP0757226 A3 EP 0757226A3
Authority
EP
European Patent Office
Prior art keywords
feature
offset
termination
inspection method
endface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96305374A
Other languages
German (de)
French (fr)
Other versions
EP0757226A2 (en
EP0757226B1 (en
Inventor
Andrei Csipkes
John Mark Palmquist
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T Corp
AT&T IPM Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AT&T Corp, AT&T IPM Corp filed Critical AT&T Corp
Publication of EP0757226A2 publication Critical patent/EP0757226A2/en
Publication of EP0757226A3 publication Critical patent/EP0757226A3/en
Application granted granted Critical
Publication of EP0757226B1 publication Critical patent/EP0757226B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3834—Means for centering or aligning the light guide within the ferrule
    • G02B6/3843—Means for centering or aligning the light guide within the ferrule with auxiliary facilities for movably aligning or adjusting the fibre within its ferrule, e.g. measuring position or eccentricity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/422—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements
    • G02B6/4221—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements involving a visual detection of the position of the elements, e.g. by using a microscope or a camera
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/422—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements
    • G02B6/4227—Active alignment methods, e.g. procedures and algorithms

Abstract

An automatic inspection method (30b) contactlessly measures the offset of a feature of an object (21) from a theoretical ideal center of the object, and is particularly suited for measuring at an endface (21') of an optical fiber termination (21) the eccentricity of an optical fiber core relative to a theoretical ideal center of the termination. The core is extremely smaller (typically between about 50 and 500 times) in size than the termination boundary. An inspection system (30b) for implementing the novel inspection method has a feature imager (38), one or more boundary segment imagers (36) but preferably four in number, and a machine vision system (34) connected to the foregoing imagers. The feature imager is positioned to capture an image of the feature (e.g., fiber core endface) (24'), and the one or more boundary segment imagers are positioned to capture an image of a corresponding boundary segment of the object (e.g., termination endface)(21'). The machine vision system determines the offset, or eccentricity, based upon the feature image and the one or more boundary segment images.
Figure 00000001
EP96305374A 1995-08-02 1996-07-23 Automatic inspection method for contactlessly measuring an offset of a central feature of an object Expired - Lifetime EP0757226B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/510,226 US5729622A (en) 1995-08-02 1995-08-02 Automatic inspection system for contactlessly measuring an offset of a central feature of an object
US510226 1995-08-02

Publications (3)

Publication Number Publication Date
EP0757226A2 EP0757226A2 (en) 1997-02-05
EP0757226A3 true EP0757226A3 (en) 2000-02-02
EP0757226B1 EP0757226B1 (en) 2002-06-12

Family

ID=24029880

Family Applications (2)

Application Number Title Priority Date Filing Date
EP96305374A Expired - Lifetime EP0757226B1 (en) 1995-08-02 1996-07-23 Automatic inspection method for contactlessly measuring an offset of a central feature of an object
EP96305394A Withdrawn EP0757228A2 (en) 1995-08-02 1996-07-23 Automatic inspection system for contactlessly measuring an offset of a central feature of an object

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP96305394A Withdrawn EP0757228A2 (en) 1995-08-02 1996-07-23 Automatic inspection system for contactlessly measuring an offset of a central feature of an object

Country Status (5)

Country Link
US (2) US5729622A (en)
EP (2) EP0757226B1 (en)
JP (2) JPH09105611A (en)
CA (1) CA2179079A1 (en)
DE (1) DE69621710T2 (en)

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US5995212A (en) * 1998-07-28 1999-11-30 Ciena Corporation System and method for inspecting an optical fiber including an epoxy area surrounding the optical fiber
US6011616A (en) * 1998-10-02 2000-01-04 Lucent Technologies, Inc. Systems and methods for measuring the concentricity of a core to a ferrule
GB2355521A (en) * 1999-09-30 2001-04-25 Marconi Avionics An imaging system
US6567575B1 (en) * 2000-03-03 2003-05-20 Lucent Technologies Inc. Method and apparatus for determining loss parameters for optical cross-connects
US6888957B1 (en) 2001-03-29 2005-05-03 Ciena Corporation System and method for detecting blobs on an end surface of an optical fiber
JP2002350110A (en) * 2001-05-28 2002-12-04 Tokyo Seimitsu Co Ltd Method and device for detecting center of work
US6672772B2 (en) * 2001-10-31 2004-01-06 Corning Cable Systems Llc Method and apparatus for positioning an optical fiber
US6798515B1 (en) 2001-11-29 2004-09-28 Cognex Technology And Investment Corporation Method for calculating a scale relationship for an imaging system
US7162073B1 (en) 2001-11-30 2007-01-09 Cognex Technology And Investment Corporation Methods and apparatuses for detecting classifying and measuring spot defects in an image of an object
US6636298B1 (en) 2001-12-18 2003-10-21 Cognex Technology And Investment Corporation Method and apparatus for focusing an optical inspection system
US7221805B1 (en) 2001-12-21 2007-05-22 Cognex Technology And Investment Corporation Method for generating a focused image of an object
US6983065B1 (en) 2001-12-28 2006-01-03 Cognex Technology And Investment Corporation Method for extracting features from an image using oriented filters
US6941016B1 (en) 2001-12-31 2005-09-06 Cognex Technology And Investment Method for finding contours in an image of an object
US6677591B1 (en) * 2002-01-30 2004-01-13 Ciena Corporation Method and system for inspecting optical devices
US6954262B2 (en) * 2002-03-18 2005-10-11 Mike Buzzetti Automated fiber optic inspection system
US6989895B2 (en) * 2002-03-18 2006-01-24 Mike Buzzetti Automated fiber optic inspection system
AU2003208782A1 (en) * 2002-04-08 2003-10-20 Zumbach Electronic Ag Contactless system for measuring centricity and diameter
US20040119988A1 (en) * 2002-10-28 2004-06-24 Finisar Corporation System and method for measuring concentricity of laser to cap
US6917750B2 (en) * 2003-05-29 2005-07-12 3M Innovative Properties Company System and method for characterizing optical devices
US7312859B2 (en) * 2004-01-30 2007-12-25 Promet International, Inc. Optical fiber inspection device
US7079743B2 (en) * 2004-10-13 2006-07-18 Corning Cable Systems Llc Apparatus and methods for estimating optical insertion loss
US7505652B2 (en) * 2006-03-03 2009-03-17 Promet International, Inc. Optical inspection of optical specimens supported by a work holder
US7945158B2 (en) * 2006-08-18 2011-05-17 Tellabs Operations, Inc. Transponder-less verification of the configuration of an optical network node
US20080073485A1 (en) * 2006-09-25 2008-03-27 Robert Jahn Visual inspection of optical elements
US7461463B1 (en) * 2007-05-16 2008-12-09 Beta Lasermike, Inc. Eccentricity gauge for wire and cable and method for measuring concentricity
CN104105970A (en) * 2012-02-16 2014-10-15 株式会社日立高新技术 System for adjusting automatic analysis device, method for adjusting automatic analysis device
IN2014KN01743A (en) * 2012-02-20 2015-10-23 Adc Telecommunications Inc
CN103363895A (en) * 2012-04-09 2013-10-23 鸿富锦精密工业（深圳）有限公司 Graphic processing system and method for measurement element points
US9007572B2 (en) 2013-03-13 2015-04-14 Promet International, Inc. Multifunction solid-state inspection system
US8995749B2 (en) * 2013-03-28 2015-03-31 Mitutoyo Corporation Enhanced edge detection tool for edges of irregular surfaces
US9612177B2 (en) 2013-12-19 2017-04-04 Corning Optical Communications LLC Ferrule-core concentricity measurement systems and methods
CN104777559B (en) * 2014-01-14 2017-07-14 泰科电子(上海)有限公司 Calibration system and method, fiber stub component and manufacture method, the joints of optical fibre
US9442005B2 (en) * 2014-07-30 2016-09-13 Corning Optical Communications LLC Non-contact methods of measuring insertion loss in optical fiber connectors
US20160061690A1 (en) * 2014-07-30 2016-03-03 Corning Optical Communications LLC Non-contact method of measuring insertion loss in optical fiber connectors using active alignment
US9645044B2 (en) 2014-09-30 2017-05-09 Corning Optical Communications LLC Controlled-contact method of measuring insertion loss in optical fiber connectors
CN107407617B (en) * 2014-11-07 2019-11-19 康普亚洲控股有限责任公司 Devices, systems, and methods for such as optical fiber measurement of multi-mode optical fiber dimensional measurement
KR102100211B1 (en) * 2015-09-10 2020-04-13 주식회사 히타치하이테크 Inspection device
RU2683802C1 (en) * 2018-05-21 2019-04-02 Станислав Сергеевич Пашин Method of optical power loss determination in detachable interconnection of optical fibers
US11808658B2 (en) 2019-09-27 2023-11-07 Panduit Corp. Visual inspector attachment for fiber connector cleaners
US11644626B2 (en) 2019-09-30 2023-05-09 Panduit Corp. Fiber optic inspection tool with integrated cleaning mechanism
DE102020202821A1 (en) * 2020-03-05 2021-09-09 Karlsruher Institut für Technologie Localization of optical coupling points

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US4738508A (en) * 1985-06-28 1988-04-19 American Telephone And Telegraph Company, At&T Technologies, Inc. Terminated optical fiber and methods of making
EP0380722A1 (en) * 1987-10-08 1990-08-08 AT&T Corp. Methods of and apparatus for reconfiguring optical fiber connector components and products produced thereby
US5045678A (en) * 1988-10-29 1991-09-03 U.S. Philips Corp. Method of and arrangement for determining the position of the optical axis of an optical waveguide
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Patent Citations (5)

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US4738508A (en) * 1985-06-28 1988-04-19 American Telephone And Telegraph Company, At&T Technologies, Inc. Terminated optical fiber and methods of making
EP0380722A1 (en) * 1987-10-08 1990-08-08 AT&T Corp. Methods of and apparatus for reconfiguring optical fiber connector components and products produced thereby
US5045678A (en) * 1988-10-29 1991-09-03 U.S. Philips Corp. Method of and arrangement for determining the position of the optical axis of an optical waveguide
EP0542251A2 (en) * 1991-11-15 1993-05-19 SIP SOCIETA ITALIANA PER l'ESERCIZIO DELLE TELECOMUNICAZIONI P.A. Method of and apparatus for measuring the geometric characteristics of nominally cylindrical guiding structures
US5408309A (en) * 1992-08-27 1995-04-18 Shin-Etsu Chemical Co., Ltd. Apparatus and method for inspecting elliplicity and eccentricity of optical fiber preforms

Also Published As

Publication number Publication date
EP0757226A2 (en) 1997-02-05
EP0757228A2 (en) 1997-02-05
US5862250A (en) 1999-01-19
JPH09113226A (en) 1997-05-02
US5729622A (en) 1998-03-17
CA2179079A1 (en) 1997-02-03
DE69621710D1 (en) 2002-07-18
EP0757226B1 (en) 2002-06-12
JPH09105611A (en) 1997-04-22
DE69621710T2 (en) 2002-12-19

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